@SandyTree None of these answers provided a direct & keyword led answer so I will since I detest the quirkyness of Opera:
Answer:
opera://settings/keyboardShortcuts
Reaktinator hotkey should be ctrl + Shift + R
Keywords/Tags:
Disabling it's shortcut should allow you to no longer have to suffer unfunny
Penguiz0 screaming or "Live schlatt reaction" or pyrocynical or man with long hair + bennie or TommyInnit reactions.
I hope my keywords listed here are helpful to any future searches that agree these attempts at being quirky arent funny & are just obnoxious